Dioecious Sedge
Carex dioica
Carex dioica, the dioecious sedge, is a species of flowering plant in the genus Carex, native to Iceland, the Faroes, Svalbard, nearly all of Europe, western Siberia, and the Altai. It prefers to live in calcareous fens.
Photo: iNaturalist: (c) odenwaelder, some rights reserved (CC BY-NC), uploaded by odenwaelder
Taxonomy & Classification
Kingdom
Plantae
Phylum
Tracheophyta
Class
Liliopsida
Order
Poales
Family
Cyperaceae
Genus
Carex
Dioecious Sedge belongs to the family Cyperaceae, order Poales, within the Liliopsida class.
Species Profile
Carex dioica, the dioecious sedge, is a species of flowering plant in the genus Carex, native to Iceland, the Faroes, Svalbard, nearly all of Europe, western Siberia, and the Altai. It prefers to live in calcareous fens.
Dioecious Sedge (Carex dioica) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. The species requires specific hydrological conditions in calcareous fens and wet meadows, which have been severely reduced through drainage, agricultural intensification, and changes in land management practices.
Key Facts
Habitat & Distribution
Threats
IUCN Red List: Critically Endangered
Dioecious Sedge (Carex dioica) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. The species requires specific hydrological conditions in calcareous fens and wet meadows, which have been severely reduced through drainage, agricultural intensification, and changes in land management practices.
Agricultural intensification and land conversion
Habitat drainage and wetland destruction
Hydrological changes and water table alteration
Climate change affecting wetland hydrology
Eutrophication from agricultural runoff
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Dioecious Sedge (Carex dioica). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/dioecious-sedge